ICD-10-CM 2027 diagnosis code

W00Fall due to ice and snow

Not billable — use a more specific code

W00 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About W00

W00 is the ICD-10-CM diagnosis code for fall due to ice and snow. It belongs to block W00-W19 (slipping, tripping, stumbling and falls) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: W00.0 (snow), W00.1 (snow), W00.2 (snow) and W00.9 (snow).

Don't report W00 together with the conditions in its Excludes1 note: fall on (from) ice and snow involving pedestrian conveyance (V00.-) and fall from stairs and steps not due to ice and snow (W10.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under W00

Coding notes

IncludesFurther defines the content of the category

pedestrian on foot falling (slipping) on ice and snow

Excludes1Not coded here — never report together with this code

fall on (from) ice and snow involving pedestrian conveyance (V00.-)
fall from stairs and steps not due to ice and snow (W10.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to W00.

Broader instructions also apply from W00-W19 Slipping, tripping, stumbling and falls and Chapter 20: External causes of morbidity.

Codes whose notes reference W00

V00Excludes1
W03Excludes1

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about W00

Is W00 billable?: No. W00 is a header code. Report one of its more specific subcodes instead.